html, body {
  height: 100%;
  overflow: hidden;
}

.pin-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header Zone ── */

.header-zone {
  background: var(--header-bg);
  flex: 0 0 auto;
  padding: 40px 20px 30px;
  text-align: center;
  position: relative;
}

/* ── Top Controls ── */

.top-controls {
  position: absolute;
  top: 8px;
  right: 12px;
  display: flex;
  gap: 6px;
  z-index: 100;
}

.toggle-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
}

.toggle-btn.active {
  background: var(--accent);
  border-color: var(--accent);
}

/* ── Language Dropdown ── */

.lang-wrapper {
  position: relative;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  min-width: 60px;
  overflow: hidden;
  z-index: 9999;
}

.lang-dropdown.hidden {
  display: none;
}

.lang-dropdown button {
  display: block;
  width: 100%;
  padding: 8px 16px;
  border: none;
  background: none;
  cursor: pointer;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink);
}

.lang-dropdown button.selected {
  font-weight: 700;
}

.lang-dropdown button:not(.selected) {
  font-weight: 400;
}

/* ── PIN Dots ── */

.pin-dots {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin-bottom: 16px;
}

.dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 3px solid #fff;
  background: transparent;
  transition: background 0.1s;
}

.dot.filled {
  background: #fff;
}

/* ── Error Text ── */

.error-text {
  color: var(--danger);
  font-size: 0.9rem;
  min-height: 1.4em;
}

/* ── Identity Card ── */

.identity-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #edf7f0;
  border: 2px solid var(--accent3);
  border-radius: 12px;
  padding: 12px 16px;
  margin: 12px auto;
  max-width: 280px;
  animation: toastIn 0.3s ease;
}

.identity-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.identity-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
}

.identity-role {
  font-size: 0.8rem;
  color: var(--note);
}

/* ── Body Zone ── */

.body-zone {
  background: var(--paper);
  flex: 1;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ── Numpad ── */

.numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 320px;
  margin: 0 auto;
  width: 100%;
}

.key {
  height: 62px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--numkey-shadow);
  border-width: 2px;
  border-style: solid;
  user-select: none;
  -webkit-user-select: none;
}

.key:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--numkey-shadow);
}

.key-digit {
  background: var(--numkey-bg);
  color: var(--ink);
  border-color: var(--ink);
}

.key-clear {
  background: #e8e4de;
  color: var(--note);
  border-color: var(--mid);
  font-size: 1rem;
}

.key-back {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.key:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Animations ── */

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-10px); }
  40%      { transform: translateX(10px); }
  60%      { transform: translateX(-8px); }
  80%      { transform: translateX(8px); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.shake {
  animation: shake 0.4s ease;
}